南京理工大学学报（自然科学版）2012，Vol.36Issue(1)：176-181,6.
简支梁弹塑性碰撞响应动态子结构方法
Dynamic Substructure Technique for Elastic-plastic Impact Responses of Simply Supported Beam
摘要
Abstract
For the elastic-plastic impact response of a simply supported beam, an impact substructure model is built and its governing equations in modal coordinates are derived from the finite element theory and modal synthesis method. A dynamic substructure technique is presented and applied to solve the elastic-plastic impact response. By considering the local elastic-plastic contact deformation, some dynamical variables, such as the complicated history of contact force, the elastic-plastic stress distribution, the displacement field, the angular displacement field and the transverse velocity field of the beam are calculated. The transient dynamics phenomena are also displayed, including the propagations of elastic-plastic waves and the formations of plastic hinges. The comparison with those of the finite element method and the plastic hinges theory shows that the dynamic substructuretechnique here is effective and valid for elastic-plastic impact responses of flexible beams.关键词
动态子结构/梁/碰撞/弹塑性动力学Key words
dynamic substructures/ beams/ impacts/ elastic-plastic dynamics分类
数理科学引用本文复制引用
骞朋波,尹晓春,沈煜年,杨钧,孔德平..简支梁弹塑性碰撞响应动态子结构方法[J].南京理工大学学报（自然科学版）,2012,36(1):176-181,6.基金项目
国家自然科学基金(10872095) （10872095）
总装预研重点项目 （）
江苏省自然科学基金(BK2008408) （BK2008408）
